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Proceedings of CAD'17, 2017, 212-216
An improved Virtual Edge Approach to Slicing of Point Cloud for Additive Manufacturing

Jinting Xu, Wenbin Hou, Hongzhe Zhang, Dalian University of Technology

Abstract. Additive manufacturing (AM) is an innovative technology to fabricate the parts with complex shapes, lately has been becoming the focus of media and gained the increasing attentions of the researchers in various fields. Unlike the traditional manufacturing processes, such as milling which removes the unwanted materials from a blank, AM builds up a part through the deposition of the materials layer by layer. This distinctive feature of AM brings many advantages, such as the abilities to manufacture the parts with complex internal structure, and it can fabricate cost-effectively the components made of the expensive materials, such as titanium and nickel, etc., in aerospace industry, because, for such parts, the traditional milling usually suffers from an extremely high material removal ratio. So far, various AM processes have been developed, including stereolithography apparatus (SLA), fused deposition mo- deling (FDM), selective laser sintering or melting (SLS/SLM), electron beam melting (EBM), etc. Although the mechanical details of these processes are different from each other, they all require slicing 3D mo- del of the part into a set of 2.5D layered contours along the building direction. At present, the used model widely in AM is parametric model, such as B-spline or Bézier surface, and STL model, but they both require the model conversion from the point cloud.

Keywords. Additive manufacturing, Point cloud, Slicing, Virtual edge

DOI: 10.14733/cadconfP.2017.212-216